Federal Premium Cape-Shok Ammunition is a great choice for any safari. Each round features a nickel plated brass case for better feeding, ejection and corrosion resistance. Each primer is lacquer-sealed to protect against moisture and assure instant ignition every time the trigger is pulled. They are available in a variety of hard-hitting bullets for taking down the biggest game. This ammunition is new production, non-corrosive, in boxer-primed, reloadable brass cases.This ammunition is loaded with Speer Trophy Bonded Sledgehammer bullets which are solid safari bullets. They are ideal for dangerous game featuring bonded-bronze and a flat nose design providing a deeper and straighter wound cavity.Technical Information Caliber: 458 Winchester Magnum Bullet Weight: 500 GrainsBullet Style: Speer Trophy Bonded Sledgehammer Case Type: Nickel PlatedBallistics Information: Muzzle Velocity: 1950 fps Muzzle Energy: 4221 ft. lbs.